Fred o



(No Model.)

m P. O. HART;

. GRATE FOR sTqVEs AND FURNACES. No. 274,938. Patented'Apr.3',1883.

UNITED; ST T S PATENT OFFICE.

FRED 0. HART, OF WAKEFIELD, MASSAoHUsETTS, ASSIGNOR To HIMSELF AND EEASTUS n. WESTON, on SAME PLACE.

"GRATE FOR STO VES AND FURNACES.

SPECIFICATION forming part of Letters Patent No. 274,938, dated April 3, 188B.

Application filed January 20,1883. (No model.)

To all whom it may concern.-

Be it known that I, FRED O. HART, a citizen of the United States, residing at Wakefield, in the county of Middlesexand State of Massachusetts, have invented certain Improvements in Grates for Stoves and Furnaces, of which the following is a i ul1,clear, and exact description, reference being had tothe accompanying drawings,making part of this specification, in

which A Figurelisaperspective view of a stove-"grate constructedin accordance with my invention. Fig. 2 is a transverse vertical section through the center of the same. Fig. 3 is a horizontal 1 5 section through the same on the line or w of Fig. 2. Fig. 4 is a transverse vertical section on the line y y of Fig. 3. Fig. 5 is a detail.

My invention has for' its object to facilitate the withdrawal of clinkers from the grate of a stove or furnace and prevent it from becoming clogged or obstructed thereby; and my invention consists in a grate composed of two separate sections or portions which are adapted to be reciprocated'by suitable mechanism, and

2 5 'are provided at their opposite ends with inclined lugs or projections fitting into correspondingly-inclined slots or guides in the frame of the grate,whereby as the sections are reciprocated they are also caused alternately to ap- 0 proach and recede from each other in such a manner as to retain their parallelism,this compound movement of the two sections causing the clinkers to be crushed or broken up and discharged through the space or opening between 3 5 them.

My invention also consists in inclining one of the sections of the grate at an angle to a horizontal plane, so that/its inner edge will be belowtheinneredgeoftheoppositesection,where- 0 by the discharge of the clinkers is facilitated and an opportunity afforded to insert a bar or poker from beneath between the two sections, to dislodge any clinkers which may not roll freely down the surface of the inclined section 5 of the grate; and my invention also consists in certain details of construction, as hereinaf ter set forth and specifically claimed.

In the said drawings, Arepresents the frame of the grate, within which is placed the grate composedof two separate and independentsec- 5o tions or portions, B (J, of the form shown, in

Figs. 1 and 3. Each of these sections is provided at itsopposite ends with lugs or projections to b, which are inclined one to the right and the other to the left, as seen in Fig. 3. These inclined projections a b are adapted to slide within correspondiugly-inclined slots or guides o d, formed, respectively, at the ends efof the frame A, between the under side thereof and'the straps or piecesg h. ()n the under side of each of the projections a. a is a pin,i,which fits into an open slot, k, in one of the branches of a T-shaped lever or rocker, D, which is centrally pivoted at l, and is provided at its outer end with a socket(seen dotted) adapted to receive the end 6 of a bar'or shaker, and thus as the lever D is lelism. The rear section, 0, of the grate is inclined downward toward the front, or at an angle to a horizontal plane, as seen in Figs. 1 7' and 2, so thatits inner edge will be below the inner edge of the section B, thelatter slightly, overlapping when the two sections are nearest to each other.

It willbe apparent that the inclination of the section 0 will cause the clinkers to roll down to and be discharged from thelongitudinal space or opening m between the sections when the latter are reciprocated as above described,while the parallel motion of the sections toward and from each other will cause any clinkers too large to pass through the spacem to be crushed or broken between the two inner edges of the sections as the width of the space at between them is alternately increased and diminished, 0 and their escape thus facilitated, whereby the liability of the bars becomingclogged or ob structed is reduced to a minimum, and a perfeet anti-clinker grate is thus secured. Another great advantage resulting from theinclination 5 i of the rear section, G, is that it affords a convenient opportunity to insert from beneath the grate a poker or bar at such an angle as to enable it to reach over the entire upper surface of the inclined section 0, and thus dislodge or pull out any clinkers which may have become wedged in place or otherwise prevented from escaping through the space m.

My invention may be applied to circular, oval, or other forms of grates, as well as to those of rectangular form.

What .I claim as my invention, and desire to secure by Letters Patent, is

1. A grate composed of two separate sections adapted to be reciprocated horizontally, and adapted to have a parallel motion toward and from each other alternat'ely,substantially as and for the purpose set forth.

2. A grate composed of two separate sections adapted to be alternately reciprocated in opposite directions, and provided at their opposite ends with inclined lugs or projections fitting into correspondiugly-inclined slots or guides in the frame of the grate, whereby as the sections are reciprocated they are caused alternately to approach and to recede from each other in such manner as to retain their parallelism, substantially as and for the purpose described.

3. A grate composed of two separate sections, B 0, having a compound reciprocating and parallel motion toward and from each other, as described, and with the rear section, 0, inclined downward, so that its inner edge will lie below the inner edge of the opposite section, whereby the discharge of clinkers from the space at between the sections is facilitated, substantially as and for the purpose set'forth.

4. The combination, with the frame A, of the two separate sections B 0, provided at their opposite ends with inclined lugs or projections a 1), adapted to slide within correspondingly -i nclined slots or guides 0 d in the frame A, and having aparallel motion toward and from each other, as described, and the T-shaped lever or rocker D, pivoted at Z, and connected with the sections B O by means of pins 2' and slots k, and adapted to reciprocate the sections alternately in opposite directions, substantially as and for the purpose set forth. 1

Witness my band this 17th day of January, A. D. 1883.

FRED 0. H-AR-T.

In presence of-- P. E.- TESCHEMAOHER, W. J. OAMBRIDGEL 

